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申请Class 1需要根据BS476-7标准进行测试。BS 476 Part 7:1997 Fire tests on building materials and structures-Part 7 method of test to determine the classification of the surface spread of flame of products. BS 476-7: 对建筑材料和结构的着火试验-第7部分：产品火焰表面延伸等级确定的测试方法。更多BS476标准测试咨询,请联系中国防火网,400-666-7290.
 
BS476 class 1标准要求:
The flame spread on the material surface should smaller than 165mm from the reference measuring point.

申请Class 0需要做 BS476-6及BS476-7

BS476 class 0标准要求:
1. The material must meet the requirement of Class 1 results to BS 476 Part 7
2. have a sub-index I1 ≤ 6 and a total index I ≤ 12 results to BS 476 Part 6

BS476 class 0需要提供的样品为:
BS476-7:  need 10 specimens, each 885mm x 267mm x end use thickness (not exceeding 50mm), and the specimens have to be essentially flat.

BS476-6: we will need 6 specimens, each 225mm x 225mm x end use thickness (not exceeding 50mm), and the specimens have to be essentially flat.

更多BS476class1 / BS476 class0,请咨询中国防火网

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